Characterization of [3,3,4,4-tetrafluoro-1,2-bis(dimethylarsino)cyclobutene] diiron hexacarbonyl and related complexes

Cullen, William R.; Harbourne, D. A.; Liengme, Bernard V.; Sams, J. R.

doi:10.1021/ic50071a023

Cited by 34 publications

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“…permutations of the iron atoms making a total of 36 possible ways of assigning the spectral lines. In trying to rule out as many of these assignments as we can, we shall rely on data we have collected for more than 40 iron carbonyl derivatives of related di(tertiary arsines and phosphines) in which the iron atoms are formally in the zero oxidation state (1,4,6,8,15). Although the quadrupole splittings in such complexes can vary widely depending on details of the stereochemistry about the iron atom, isomer shift values have invariably been found to lie within the range +0.16 ,< F < f0.51 mm s-'.…”

Section: Resultsmentioning

confidence: 99%

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Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Chia¹,

Cullen²,

Sams³

et al. 1973

Can. J. Chem.

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New polynuclear iron carbonyl complexes having the stoichiometry LFe3(CO)10 have been obtained from the reactions of Fe3(CO)12 with the di(tertiary arsine) ligands (CH3)2AsC(X)(Y)CF2As(CH3)2 (X = Y = H; X = H, Y = F; X = F, Y = CF3). The structures of the new cluster complexes have been investigated using i.r., n.m.r., and Mössbauer spectroscopies. Mössbauer data are also reported for LFe3(CO)10 and LFe3(CO)9 derivatives of the mixed ligand [Formula: see text].

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Section: Resultsmentioning

confidence: 99%

“…Thus the ligand 3, which is electronically similar to f4fars but should have a smaller As.. .As separation because of the acyclic bridging group, does not form an Fe3(CO),, complex (5). The importance of ligand bite is also evident in the tendency of these and related ligands to act as chelating groups (4)(5)(6)(7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Chia¹,

Cullen²,

Sams³

et al. 1973

Can. J. Chem.

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“…NMR spectra were measured on the following instruments, at the frequencies listed, unless stated otherwise: Jeol JMN-AL 400 and Jeol FX270, 1 6 (μ-PhC≡CH) [12] were prepared by following literature procedures.…”

Section: General Considerationsmentioning

confidence: 99%

“…We have become interested in ligands of the type R 2 PC 5 F 6 PR 2 (R = Ph, cyclo-C 6 H 11 ), which are reported by Cullen (Chart 1) [1].…”

Section: Introductionmentioning

confidence: 99%

Molecular Structure of Co2(μ-Alkyne) Complex Containing Ph2PC5F6PPh2 Ligand

Minato¹,

Miyato²,

Kakeya³

2015

IJOC

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Oxidative-decarbonylation of Co 2 (CO) 6 (μ-PhC≡CH) with Me 3 NO in the presence of an electron deficient ligand, Ph 2 PC 5 F 6 PPh 2 (F 6 FOS), produces Co 2 (CO) 4 (μ-PhC≡CH)(F 6 FOS), (1). The metrical values of 1 have been compared to those of the closely related cobalt carbonyl alkyne compound A containing (Z)-Ph 2 PCH=CHPPh 2 (Z-dppe) ligand. Strikingly anomalous is an alkyne C≡C bond (1.34(1) Å) in 1, which is somewhat elongated compared to A (1.31(1) Å). When taking a strong electron-withdrawing power of fluoride atom into account, F 6 FOS ligand appeared to reduce the π-back-donation ability of cobalt atom, making this bond shortened in comparison to the same bond in A. Bond lengthening in the alkyne C≡C bond in 1 is attributed to the enhanced electron donor ability of F 6 FOS compared to Z-dppe and can be understood by examining resonance structures of F 6 FOS ligand.

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“…As part of our continuing study of the reactions of fluorocarbon-bridged ditertiary phosphines and arsines (4)(5)(6)(7)(8), 3, we have prepared a number of Rh(1) complexes which present some interesting parallels with and differences from earlier studies. Herein we report the results of this work.…”

Section: Introductionmentioning

confidence: 98%

Fluorocarbon-bridged ditertiary phosphine derivatives of rhodium carbonyl halides

Cullen¹,

Thompson²

1970

Can. J. Chem.

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Characterization of [3,3,4,4-tetrafluoro-1,2-bis(dimethylarsino)cyclobutene] diiron hexacarbonyl and related complexes

Cited by 34 publications

References 0 publications

Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Molecular Structure of Co<sub>2</sub>(<i>μ</i>-Alkyne) Complex Containing Ph<sub>2</sub>PC<sub>5</sub>F<sub>6</sub>PPh<sub>2</sub> Ligand

Fluorocarbon-bridged ditertiary phosphine derivatives of rhodium carbonyl halides

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Characterization of [3,3,4,4-tetrafluoro-1,2-bis(dimethylarsino)cyclobutene] diiron hexacarbonyl and related complexes

Cited by 34 publications

References 0 publications

Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Some New Iron Carbonyl Cluster Complexes of Di(tertiary arsines)

Molecular Structure of Co&lt;sub&gt;2&lt;/sub&gt;(&lt;i&gt;μ&lt;/i&gt;-Alkyne) Complex Containing Ph&lt;sub&gt;2&lt;/sub&gt;PC&lt;sub&gt;5&lt;/sub&gt;F&lt;sub&gt;6&lt;/sub&gt;PPh&lt;sub&gt;2&lt;/sub&gt; Ligand

Fluorocarbon-bridged ditertiary phosphine derivatives of rhodium carbonyl halides

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Molecular Structure of Co<sub>2</sub>(<i>μ</i>-Alkyne) Complex Containing Ph<sub>2</sub>PC<sub>5</sub>F<sub>6</sub>PPh<sub>2</sub> Ligand